Self-closing hatchway



(No Model.) 2 Sheets-Sheet 1.

D. HUMPHBEYS.

SELF CLOSING HATGHWAY.

No 274,777. Patented Mar. 27,1883.

,f I H V N N ML U 5M s Q o H N E 1 w l b I k 9 o R Id NT g Attormys (N0 Model.) 2 Sheets-Sheet D. HUMPHREYS. SELF CLOSING HATGHWAY.

. 116.274,??? PatentedMah 27,1883.

a citizen of the United States, resident at N or- V fication.-

- the hatchway-flooring, the rods connecting the bent levers, as hereinafter set forth.

Virginia, have invented certain new and usecentrally arranged on each side of the hatch- UNITED STATES PATENT OFFICE,

DAVQID'HUMPHBEYS, on NORFOLK, VIRGINIA.

SELF-CLOSING HATCHWAY.

SPECIFICATION forming part of Letters Patent No. 274,777, dated March 27, 1883.

Application filed December 21, 1882. (No model.)

To all whom it may concern Be it known that 1, DAVID HUMPHREYS, a

folk, in the county of Norfolk andState of ful Improvements in Self-Closing Hatchways; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form apart of this speci- Figure 1 of the drawings is arepresentation of a vertical section of this invention. Fig. 2 is a horizontal section. Fig. 3 is a vertical section showing the hatchway closed. Fig. 4 is a vertical section showing the hatchwa y open. l I This invention hasrelation to self-closing hatchways for elevators; and it consists in the construction and novel arrangement, in connection with the elevator-uprights, and horizontalhatchway-slides reciprocating at right angles to the plane thereof, of the pairs of bent levers pivoted to the elevator-uprights on each side of the elevator-way and above and below bent levers to the hatchway-slides, and the double bearin gs of the elevator car or platform, adapted to receive the arms of the pairs of In the annexed drawings, the letter A designates a hatchway or opening made in a floor, B, of a building for the passage of the elevator car or platform 0.

D D are the uprights of the elevator-way,

way, and provided with the usual metallic guides, E, for the car. Between each guide E and the upright D, back of the same, is arranged a slotway, g, above as well as below the liatchway-fioorin g; or the slotway gmay be formed in the guide or in the upright. In each slotway g is pivoted fipair of bentlevers, L L, eachleverbeing centrallypivoted, as indicated at It, and having an upper oblique arm, k, and a lower oblique arm, I, said arms being re-' versely curved at their terminal ends, as represented at m. I I

S S represent the hatchway-slides, which rel plane of the elevator-uprights, so that there will be no necessity of slotting them toprovide for said uprights.

To each side of each slide S is hinged, at t, a connecting-rod, R, which extends obliquely through the slotway g, and is pivoted to the lower end of the lower arm of the opposite lever L of the pair which are pivoted. in said slotway.

To the under side of .each slide S, on each side thereof, is hinged a similar connectingrod, R, which passes through the lower sl0t-' way g, and is pivoted to the upper arm of the lever on the opposite side, below the hatchway.

The sides of the'car are provided with bearings V V, which are arranged in pairs or double, one pair being placed higher than the other on the same side, as indicated in the ends, so that the latter are turned inward to engage the bearings by their convex edges.

When the car approachesthe hatchwayfrom below, the double bearings pass on each side of the bent levers, the lower arms of which are closed toward each other, and said bearings engage the upper arms of said levers, which are in the extended position, the hatchway bev ing closed. As the car rises, the arms k of the lower levers are forced toward each other by the double bearings V, and this movement, being communicated to the hatchway-slides by the rods R, separates them and opens the hatchway for the passage of'the car. When the car rises from the hatchway its double bearings engage the upper arms, k, of the upper levers L and force them together, thereby extending These slides S S are designed to I the lower arms, Z, of said levers and closing the hatchway-slides. Inthe descent of the car, the lower double bearings, V, serve to close the lower arms, Z, of the upper levers, forcing the hatchwayslides apart. car descends from the hatchway the double bearings V engage the extended lower arms of thelower levers, forcing the hatch way-slides together.

I am aware that bent levers are not new in,

the construction of self-closing hatchways, and

. I do not broadly claim such devices.

What 1 claim, and desire to secure by Letters Patent, is-

1. The combination, with the hatchway As the 2 4 was??? each side of the e1evator-way,'of the oblique connecting-rods It, hinged respectively to the slides extending through said slotwaysand pivoted to said bent levers, substantially as specified.

3. The combination, with the vertical slotways 9, in or back of the elevator-guides E, and the pairs of bent levers L L, pivoted therein, of the upper and lower double bearings, V V, of the car, extending on each side of the guides, substantially as specified.

4. The bent levers L L, having the reverselycurved arms k l, substantially as specified.

In testimony whereoflaffix my signaturein presence of two witnesses.

DAVLD HUMPHREYS.

Witnesses:

THEODORE MUNGEN, PHILIP O. MAsI. 

